Dentist&#39;s cabinet



R. KLICKA. DENTfSTS CABINET.

APPLICATION FILED NOV. I6, 1920.

Patented Aug; 23, 1921.

2 SHEETS-SHEET l- UNITED STATES PATENT OFFICE.

DENTISTS CABINET.

Specification of Letters Patent.

Patented Aug. 23, 1921.

Application fil ed November 16, 1920. Serial No. 424,358.

T all item it may concern:

Be it known that I, RUDoLr KLIoKA, citizen of the United States, andresidingin the city of Pittsburgh, in the county of Allegheny and Stateof Pennsylvania, have invented or discovered the new, useful, and.

. combinesthe function of a cabinet for conveniently containingthenecessary tools and other requisites for oral work with-the function ofa dental laboratory and work bench.

With this object in view, I have invented a new and improved combinationcabinet provided with suitable compartments or.

drawers for tools and other requisites for oral. work within easy reachand access of the dentist while working on a patients teeth, and whichis in addition provided with the power tools, such as drills, grindingwheels, buffers and rotary brushes, required for dental laboratory work.

The cabinet is provided with means for collecting and carrying away thedust and refuse resulting from laboratory work, and filtering the samefrom the air, so that the same do not float in the atmosphere of theroomnor settle on the furniture. Means are also provided for the thoroughseparation from such dust of the valuable gold and other metal particleswithout loss.

Other novel features of construction and arrangement of parts willappear from the following description.

In the accompanying drawings, which are,

however, merely intended to illustrate a practical embodiment of theprinciples of my invention without limiting the scope of the latter tothe construction shown, Figure 1 is a front elevation of a combinationcabinet embodying the principles of my invention; Fig. 2 is a verticalsection taken along the irregular line IIII in Fig. 1; Fig. 3 is avertical sectiontaken along the line ITI III in Fig. 2; Fig. 4 is ahorizontal section taken along the line IV-IV in Fig. 2; Fig. 5qis abroken perspective taken in section along the line V-V-in Fig. 3, and

on a slightly enlarged scale; and Fig. 6 is.

a detail section along line VIVI in Fig.

l the drawer being shown pulled out to expose the section port. Fig. 7is a perspective of the air filter.

The following is a detailed description of the drawings:

The cabinet, which, is preferably of wood but which of course may bemade of metal, is shown as of the following construction.

1 represents the vertical side walls, 2 the back and 3 the top.

4 is the working shelf horizontally supported by the side and back wallsat a convenient-height. Above the shelf 4 are the two spaced apartshelves 5 and 6. 7 represents vertical partitions spaced. inwardly fromthe sides 1, thus forming with the sides and back and with the shelves 5and 6, compartments which are divided by the short horizontal shelves 8to receive the small drawers 9 for storing tools and other supplies.

10 is a vertically disposed box or duct whose rear wall is formed by theback 2 and which extends from an opening or port 11 in the rear centerof the shelf '4, through the rear center of the shelf 5, to a port 12 inthe rear center of the shelf 6.

The rear or inner portion of the space between shelf 6 and the top 3 isinclosed by the removable door or closure 13 which is disposed in theupwardly and outwardly inclined position shown in Fig. 2 bearing againsttop and bottom horizontal cleats 14, and held in position by pivotedbuttons 15 which engage slots in the inner surfaces of the sides Thusan'upwardly expanding filter chamber 16, extending the full width of thecabi net is formed. To oneside of its transverse.

20 represents wooden or other solid ends whlch are connected togetherand suitably spaced apart by the longitudinal top and bottom braces 21,22 represents a covering of cheese cloth or other textile material whichis stretched on said frame, inclosing the same except the top which isopen. The end pieces 20 are provided at their tops with horizontallydisposed flanges 23, whose under surfaces are slightly inclined down-.

24 upon which the flanges 23 ride when the filter is introduced into thecompartment 16. The inclination of the fianges23, having'a wedgingengagement with the cleats 24, causes the top edge of the filter to beforced up into snug engagement with the under side of the top 3 of thecabinet. The port 17 is positioned to open into the interior of thefilter. The textile filter walls are spaced away from the front and rearwalls of the compartment 16, as shown in Fig. 2, and the bottom of thefilter is somewhat above the shelf 6. Thus air sucked by the fan Athrough said compartment from the port 12 to the port 17 must passthrough the filter, depositing on the walls all dust and other foreignmatter, so that the fan may discharge its air into the room withoutcontaminating the atmosphere.

The filter may be removed at suitable intervals for cleaning off thematerials deposited from. the air on its walls, the valuable elements,such as small particles of gold being recovered, and dust deposited onthe floor and walls of the compartment 16 may be swept out and itsvaluable elements separated.

25, 25, 252-25, 25 and 25 are partitions extending from the shelves 4and 5, and forwardly from the back wall 2 but stop )ing short of thefront edge of the shelf 4. hus a central compartment 26 is formed toaccommodate an electric motor B. Also four working compartments 27, 28,29 and 30 are formed, and two relatively narrow end compartments 31 and32, which may be used for storage or display.

In front of each compartment 31 and 32 I depend a lamp support 33 fromthe shelf 5 carrying an incandescent lamp 34 to illuminate the workingshelf 4.

35 represents the motor shafts extending from either end of the'motor Bacross the fronts of the working compartments, the

partitions being notched, as at 36 in Fig. 5,

to provide clearance for the shafts, so that the rotary tools 37 mountedon the shafts, such as grindin wheels, buffers, brushes, &c. aresubstantially half within the working compartments.

38 represents a dust receiver or hopper mounted under the shelf 4against the back wall 2.- The lower end of the duct 10 connects with thetop center of the hopper by means of the port 11 through the shelf 4.

In the rear of each working compartment the shelf .4 is orted, as at 39in Fig. 4, for

the full widt of the compartment, thus-- forming openings through saidshelf connecting the working compartments with the interior of thehopper.

40 represents sliding valve members, preferably in the form of drawers,one of which is provided for each working compartment. When said drawersare shoved back into the compartments, said ports are closed! By drawingout a drawer, as shown in Fig. 4, the corresponding port 39 will beopened.

The rear portions of said drawers 40 are provided with double deflectingshields or lids 41, facing front and rear,so that whena drawer is pulledout, exposing the corresponding port 39, the dust and dry particles fromthe tools will be deflected down into the port 39 while the pumice pasteor other liquid will be deposited in the front of the drawer. I

The bottom or throat of the hopper 38 is provided with a removable box42 into which the gold or other heavy metallic particles drop to berecovered.

43 represents a box with inclosed and opaque sides and front andwhoseback' is formed by the front wall of the duct 10; said boxdepending from the shelf 6. 44 represents posts extending from the shelf5 to the lower front cornersof said box. The bottom, 45, of said box isa glass plate, and 46 is a glass plate filling in the space between theposts 44, the shelf 5 and the box 43. Thus the space between the'bottomof the box 43 and the shelf 5 is therefore provided with a transparentglass wall or shield in front but is open at the sides. 47' is ala-mpsupport depending in the box 43 and provided with a lamp 48 whichilluminates from above the space in shelf 5 below the box 43.

C is a'dental engine mounted on the top 3 so that its flexible drivingshaft 49 may be either turned up out of the way, or turned down as shownin Fig. 1, so that its drill chuck may be inserted, from the side, underthe box 43, as shown.

50 is a door or closure in the front wall of the duct 10 below the box43. Vhen said door is opened, the dust from the working 7 materials orsubstances rolling or moving off.

the shelf 4. When turned u and secured, the apron acts'as-a closure orthe shelf 4 and the compartments floored thereby, thus concealing andprotecting their contents.

54: represents storage drawers for tools, supplies, &c., fitted betweenthe sides 1 below the shelf 4 and in front of the hopper 38.

When work is to be done on this'shelf 4, the door 50 is closed and allof the drawers 4.0 are pushed in to cover the ports 39, except in thecase of the working compartment in front of which the work is to bedone. In the case of said compartment, the drawer is drawn forward untilthe apex of its shield is under the motor shaft, and thus exposing thecorresponding port 39. Thus, while the pumice paste discharged from therotary tool, and similar liquids are thrown down into the front inclineof the shield and thus caused to run down into the interior of thedrawer, the remaining refuse and dust is directed toward and sucked downthe port 39 into the hopper 38, the heavier elements, such as particlesof gold falling down into the removable recovery box 42, while thelighter material is sucked up the duct 10 into the chamber 16 whereinthe air is sucked through the filter walls 22, depositing the dust andother suspended materials on said walls, while the filtered air isdischarged by the fan to atmosphere. The filter may be removed at properintervals for cleaning its walls and the recovery of valuable materialtherefrom. p

Also the chamber 16 may be swept of precipitated dust.

When work is to be done on the shelf 5' under the box 43, all of theports 39 are closed and the door 50 opened. The work is held under theglass bottom 45 and in the rear of the glass shield 46 and the drill orother tool on the end of the flexible engine shaft is applied thereto,the hands of the operator being inserted from the sides.

The work is illuminated by the lamp in box 43, but the opaque walls ofthe box prevent the light shining into the operators e es.

The door 50 is opened, thus causing all dust and refuse to be suckedback into the duct 10, as heretofore indicated.

From the foregoing is apparent that my combination cabinet is a veryadvantageous and convenient piece of furniture inasmuch as it fulfilsall the purposes and requirements of both operative or oral andlaboratory work.

Although, for the sake of clearness, I have minutely described theembodiment of the principles of my invention illustratedin the drawings,I do not wish to limit myself thereby, but claim broadly;

1. In a cabinet of the character described, the combination of a workingcompartment inclosed at the bottom, top, sides and rear and adapted tocontain a power tool, a port in the floor of said compartment, a drawerslidably mounted on the floor of said compartment and adapted whenpushed in to partment and adapted when pushed in to.

close said port, means for applying suction to said port for thewithdrawal of the dust and refuse caused by the operation of said tool,and a double pitched reflector on-the rear portion of said draweradapted when said port is open to direct the dry dust and refuse towardsaid port and the liquid refuse forwardly into said drawer.

3. In a cabinet of the character described, the combination of aplurality of horizontally alined working compartments, a container fordust and refuse beneath said compartments, a port connecting each ofsaid compartments with said container, sliding drawers in saidcompartments adapted to open and close said ports, and means forapplying suction to said container.

' 4. In a cabinet of the character described, the combination of aplurality of horizontally alined working compartments, a receivingcontainer beneath said compartments, said compartments beingindividually connected with said container by means of valved ports,vacuum producing means in the upper part of said cabinet, and {a ductleading from said container to said means.

5. In acabinet of the character described, the combination of aplurality of horizontally alined working compartments, a receivingcontainer beneath said compartments, said compartments beingindividually connected with said container by means of valved ports, anair-filter in the upper part of said cabinet, a duct connecting saidcontainer with one side of said filter, and vacuumproducing meansconnected to the other um producing means connected to the upper part ofsaid chamber.

7 In a cabinet of the character described,

the combination of a plurality of horizontally alined workingcompartments, a receiving hopper beneath said compartments and connectedto each of the latter by means of valved ports, a chamber in the upperpart of said cabinet, a duct connecting the lower portion of saidchamber with said hopper, vacuum producing means connected to the upperportion of said chamber, and a textile air-filter mounted in saidchamber to intercept the current of air sucked through the same.

8. In a cabinet of the character described, the combination of aplurality of horizontally alined working compartments, a receivinghopper beneath said compartments and connected to each of the latter bymeans of valved ports, a removable closure for the throat of said hopperfor theremoval of heavy particles of refuse, va chamber in the upperportion of said cabinet, a duct connecting-said hopper with saidchamber, a vacuum producing means connected to the upper portion of'said chamber, an air-filtering means mounted in said chamber andintercepting the traveling air.

In a cabinet of the character described, the combination of a pluralityof horizontally alined working compartments, a receiving hopper beneathsaid compartments and connected to each of the latter by means of avalved port, a vertical duct having its lower end connected to saidhopper, and means for applying suction to the upper end of said duct. V

10. In a cabinet of the character described, the combination of aplurality of horizontally alined working compartments, a receiv inghopper beneath said compartments and connected to each of the latter bymeans of a valved port, a vertical duct having'its lower end connectedto said hopper, means for applying suction to the upper end of the duct,and a removable box forming the closure for the throat of said hopper.

11. In a cabinet of the character described, the combinationof acompartmentedworking shelf, a container beneath said shelf, a portconnecting each of said compartments with said container,'valves forsaid ports,

7 said filter.

an air filter, communicating with said'-contamer, and means for applyingsuction to 12. In a cabinet of the character described, the combinationof a working shelf, a container beneath said shelf, a port connectingsaid shelf with said container, an air filter above said container, anair duct connecting said container with one side of said filter, andmeans for applying suction to the other side of said filter. V

13. In a cabinet of the character described, the combination of aworkingcompartment I having a transparent top and provided w th suctionmeans for theremoval of the refuse of working, and a lamp compartmentabove said working compartment and whose floor is formed by. thetransparent top of said working compartment, and said lamp com partmentbeing provided with an opaque front wall to prevent the light shininginto the eyes of the operator;

14. In a cabinetof thecharacter described, the combination of a workingcompartment having a transparent top and provided with valved suctionmeans for the removal of the refuse of working, and a lamp compartmentabove said working compartment and whose I floor is formed by thetransparent top of said workin com Jartment and said lam i compartmentbeing provided with an opaque front wall to prevent the light shininginto the eyes of the operator. g g

15. In a cabinet of the character described, the combination of aworking compartment having a transparent top and front wall, the sidesof said working compartment being open, and said working compartmentbeing provided with suction means for the; removal of the refuse ofworking, and a lamp compartment above said working compartment, thefloor of said lampcompart ment being formed by the transparent top ofsaid working compartment and the front wall of said lamp compartmentbeing opaque to prevent the light shining into the eyes of the operator.Y I

Signed at Pittsburgh, Pa., this 13th day of November, 1920.

RUDOLF KLICKDA.

